document.write( "Question 563746: f(x)+3x^2-18x+2
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document.write( "I need to graph this but don't know how
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document.write( "Help! I'm lost \n" );
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Algebra.Com's Answer #365031 by lwsshak3(11628)![]() ![]() ![]() You can put this solution on YOUR website! I need to graph this \n" ); document.write( "f(x)=3x^2-18x+2 \n" ); document.write( "Since this is a second degree equation, the graph is a parabola. \n" ); document.write( "complete the square \n" ); document.write( "y=3(x^2-6x+9)+2-27 \n" ); document.write( "y=3(x-3)^2-25 \n" ); document.write( "This is an equation of a parabola of the standard form: y=A(x-h)^2+k, with (h.k) being the (x,y) coordinates of the vertex. \n" ); document.write( "For given parabola: \n" ); document.write( "Vertex:(3,-25) \n" ); document.write( "axis of symmetry: x=3 \n" ); document.write( "Parabola opens upwards (lead coefficient>0) \n" ); document.write( "y-intercept \n" ); document.write( "set x=0 \n" ); document.write( "f(0)=3(3)^2-25=27-25=2 \n" ); document.write( "This gives you points at (0,2) and (6,2) because of axis of symmetry. \n" ); document.write( "You now have all the information you need to graph the given function \n" ); document.write( " |